摘要
针对风电并网与电网振荡解列日益凸显的交互影响,首先,基于PSD-BPA仿真软件建立"风火打捆"等值单机无穷大系统,从风电接入比例及风电场是否加装无功补偿两个方面对系统失步振荡特性进行仿真分析。结合实际电网,加以仿真验证。其次,改变电网运行方式或者故障点位置,通过对比相应的风电脱网量,仿真分析振荡解列对风电可靠并网的反作用。结果表明,风电并网比例越大、风电场具备无功补偿时有利于抑制电网失步振荡,提高电网稳定性;电网不同运行方式及故障地点可能改变电网的振荡模式,使振荡中心发生迁移,影响风电的可靠并网。最后,针对二者间的交互影响,提出合理的优化建议。
The interactive influence between the integration of wind power and the swing and splitting of power grid has become increasingly prominent.Firstly,the equivalent single-machine infinite-bus model of wind-thermal-bundled system is built by using PSD-BPA software,based on which the simulation and analysis on such aspects as the proportion of wind permeability and whether the wind farm should be equipped with reactive power compensation are carried out.And they are testified by combing practical power grid.Secondly,through changing the operation mode or the fault location,the corresponding capacity of off-gird wind power is compared,and the effect of swing and splitting of power grid on the integration of wind power is analyzed.The results show that the larger integration scale of wind power the better reactive power compensation capability which is helpful for suppressing out-of-step oscillation of power grid,and improving the stability of power system.It is also can be seen that different power grid operation modes and fault locations can change oscillation mode of power grid,make the oscillation center migrate,and affect the integrating of wind power.Finally,optimized recommendations are given in view of studied interactive influence.
出处
《现代电力》
北大核心
2016年第2期89-94,共6页
Modern Electric Power
关键词
风电并网
振荡解列
稳定性
无功补偿
wind power integration
swing and splitting of power grid
stability
reactive power compensation
